Investigators are working to determine what caused an early morning house fire in Kansas City, Missouri. Firefighters were called to the 9500 block of Belleview Avenue near West Bannister Road around 3:22 a.m. after neighbors called 911 to report flames coming from the roof of a home. The older couple who lived in the home made it out safely and were taken to an area hospital for observation.Sadly, several cats perished in the fire. KC Pet Project is assisting with their remains. Fire crews said the home had working smoke alarms, and that helped the couple make it out of the home safely. Officials with KCFD said if you're a Kansas City resident and you need free smoke alarms, you can call 816-513-4648.The cause of this fire remains under investigation.